Accounting Administrative Assistant

Diamond Properties is a commercial real estate owner and manager headquartered in Mount Kisco, NY. Our portfolio primarily focuses on industrial sites and includes over 100 properties totaling 17 million square feet across 14 states. Since our founding in 1995, we have followed a long-term buy-and-improve strategy that, when combined with quality-driven customer service, has enabled us to deliver consistently high tenant satisfaction and lease renewal rates. Learn more about Diamond Properties and our portfolio at www.dpmgt.com.

Position Overview

Diamond Properties is seeking an Accounting Administrative Assistant to support the execution, accuracy, and organization of core accounting operations. This role sits at the intersection of accounting, administration, and process support, ensuring that financial data, documentation, and workflows are maintained with precision and consistency.

The ideal candidate is highly detail-oriented, proactive, and capable of managing high-volume administrative accounting tasks while maintaining strong organizational control over financial records and documentation. This position plays a key role in supporting the accounting team’s efficiency by ensuring foundational processes are executed accurately and on time.

This is an on-site position based in Mount Kisco, NY, reporting to the Controller.

Key Responsibilities

Accounting Support

• Assist with AP processes, invoice tracking, vendor follow-up, and check runs
• Support expense report, credit cards and daily cash receipting

Operational & Administrative Support

• Maintain organized financial records, including scanning, filing, and document retention
• Manage key documents (bank, loan, tax, and vendor records) and monthly checklists
• Support reconciliations, reporting, and internal tracking
• Manage incoming mail and accounting communications

Process Support & Team Collaboration

• Ensure consistency in documentation and reporting practices
• Assist with process improvements, transitions, and monthly coordination
• Take ownership of assigned tasks through completion

Qualifications

Required:

• 1–3 years of experience in accounting, administrative support, or a related field
• Strong attention to detail and high level of accuracy in data entry and documentation
• Basic understanding of accounting principles (journal entries, invoices, reconciliations)
• Proficiency in Microsoft Excel and general office software
• Strong organizational and time management skills
• Ability to handle multiple tasks and meet deadlines in a fast-paced environment

Accounting Leadership Principles

As a member of the Accounting Department, this role will be expected to demonstrate our Accounting Leadership Principles to help accelerate the Diamond Properties strategy. Our Leadership Principles are:

1. Take an Ownership Mentality: Act like an owner of our properties and processes.

2. Be A+ on Core Fundamentals: Deliver accurate financials on time, every time.

3. Solve for Scale: Implement solutions that anticipate and accelerate 25% EBITDA growth by 2027

4. Collaborate to Win-Win: Internal collaboration leads to win-win outcomes.

5. Build Team Capacity: Develop our people well enough so they could go work anywhere else; treat them well enough so they don’t want to.

Salary and Benefits

Diamond Properties offers competitive compensation commensurate with experience. The expected wage for this role is $24 - $25 per hour. Other benefits include:

• Comprehensive health, dental, and vision insurance
• 401(k) retirement plan with employer match
• Paid time off and holidays
• Opportunities for professional development
• Collaborative and collegial work environment

Diamond Properties is an equal opportunity employer committed to diversity and inclusion in the workplace. We celebrate the contributions of all employees and strive to create a positive and inclusive work environment for everyone.

AAP/EEO Statement: Diamond Properties is an Equal Opportunity Employer that does not discriminate on the basis of actual or perceived race, color, creed, religion, national origin, ancestry, citizenship status, age, sex or gender (including pregnancy, childbirth and pregnancy-related conditions), gender identity or expression (including transgender status), sexual orientation, marital status, military service and veteran status, physical or mental disability, genetic information. This policy applies to all terms, conditions and privileges of employment, including recruitment, hiring, placement, compensation, promotion, discipline and termination.

Disclaimer: This job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee. Duties, responsibilities, and activities may change, or new ones may be assigned at any time with or without notice.

Pay: $24.00 - $25.00 per hour

Benefits:

• 401(k) matching
• Dental insurance
• Employee assistance program
• Employee discount
• Health insurance
• Paid time off
• Retirement plan
• Vision insurance

Experience:

• Accounting: 1 year (Preferred)

Ability to Commute:

• Mount Kisco, NY 10549 (Required)

Work Location: In person